While Yang Meng was waiting for the results of the analysis,

The flickering frequency of the small light seemed to have returned to its previous level, and it finally began to answer Yang Meng's question:

"You asked me this question before, you should remember!"

"Yes!"

Yang Meng nodded lightly.

At the beginning, Xiaoguang told him that the Rutans had long been aware of this special planet in the solar system.

And in addition to the solar system,

In the long history of Rutan, three civilizations have also been found in the existence of galaxies.

It's just that because the time is too long,

The civilization signals of those three galaxies eventually lost contact for various reasons.

As for what the reason,

Perhaps the Rutans had limited astronomical technology and were unable to make judgments,

At that time, Yang Meng was based on the astrophysical knowledge of human beings, plus some historical records told by Xiaoguang,

It is roughly concluded that those galaxies may be due to the constant motion of the celestial bodies in the Milky Way.

Those galaxies moved extremely far away from the Rutan system, causing the signal to be distorted, and the Rutans could not receive the signal.

Or, according to the color of the stars described by the Rutans, the galaxy where civilization exists, has a short-lived star,

The end of life of a star causes the alien civilization signal to be lost.

In short, there are many possibilities, but the probability of some possibilities is not large, and Yang Meng did not consider it further.

And now,

Yang Meng heard Xiaoguang's voice, and then looked at him as a point of light, and he realized something:

"Is there anything else he can add?"

And Xiaoguang's next words also verified Yang Meng's guess,

"I didn't tell you more about it because I was in a hurry to get out of there?"

"Actually, in addition to, three civilization signals!"

"When we were able to adjust the water vapor circulation system, we used some observation techniques to find a new world suitable for our survival!

"We've found a lot of planets, and your planet is one of them!"

"So you've been through this too."

Yang Meng was not surprised by Xiaoguang's statement,

Ever since the invention of astronomical telescopes, humans have been searching for celestial objects that resemble the Earth around them.

From the beginning of the belief that there were Martians on Mars, to the belief that there were Titans on Titan, where there was liquid hydrocarbon rain and hydrocarbon seas.

With the advancement of observation technology and the increase of observation time, human beings are constantly searching.

From near to far, human beings have discovered more and more planets, and the more they can discover, the more disappointed they are.

There are almost no star systems around the solar system that resemble the solar system.

Most of them are red dwarfs that are dark and cold compared to the Sun, like Rutan.

By the standard of human life, the probability of life in such galaxies is lower than that of the solar system, which is a single-star, yellow dwarf star system.

In the face of such a high frequency of red dwarfs around the solar system, even if these red dwarfs are difficult to observe, mankind still has not given up.

"Fortunately, the exploration has finally come to fruition,"

Thinking of this, Yang Meng glanced at the small light in front of him, waiting for it to follow.

"Your planet, we discovered it very early, but at that time, the environment in the entire galaxy was still very harsh, and it was not suitable for us to live.

So we didn't pay attention to your galaxy at first! ”

"Until ......"

Xiaoguang was about to continue, but Yang Meng, who finally realized something, hurriedly interrupted Xiaoguang's words:

"Wait! When did you first observe the solar system? ”

"And what kind of technology did you use to detect the intragalactic environment so far away?"

Faced with Yang Meng's question, Xiaoguang flickered for a moment and responded:

"Approximately in ......"

The time that Xiaoguang said was said by the time standard of the Rutan people,

And Xiao Yi, who has been acting as an automatic simultaneous translator, immediately translated it into the earth's calendar list:

"570 million years ago!"

"You were very close to us at the time, about 6.7 light-years away!"

Hearing the data converted by Xiao Yi's translation, Yang Meng was slightly shocked in his heart,

"570 million years ago, 6.7 light years!"

"Xiao Yi! In the last galactic orbit cycle, was Rutan so close to the solar system? ”

Hearing Yang Meng's question, Xiao Yi silently calculated for a while and responded:

"Sorry, with our current astronomical observation technology, we can't simulate and calculate the surrounding conditions of the solar system of the galactic cycle!"

"That's it!"

For such an answer, Yang Meng was not surprised,

The celestial bodies in the universe are constantly moving,

The solar system moves around the Milky Way, and if the solar system is recorded as a year around the Milky Way,

That year was about 223 million years.

And in the process, the solar system will encounter all kinds of stars.

Like a Rutan star,

According to the model of the standard cosmic space velocity established by mankind with the Sun and the center of the Milky Way as references,

The Rutan star is in a model, in the direction of W+, that is, in the oblique upward direction of the Sun.

Move away from the solar system at a speed of 18 km/s.

With the exception of Rutan, the other stars are getting farther and closer from the Sun in different directions.

However, except for the Rutan star he is familiar with, he is not very clear about the motion data of other stars.

Yang Meng only remembered that Barnard's star, which is the second closest to the earth, is approaching the earth at a speed of 90 kilometers per second.

About 20,000 years or so,

Barnard will then reach a position 3.85 light-years from the Solar System, surpassing Proxima Centauri to become the closest star to the Solar System.

As for the trisolaran galaxy where Proxima Centauri is located, it is moving away from the solar system at a speed of 22.204 kilometers per second.

Perhaps in millions of years, the trisolaran galaxy, which is closest to the solar system, will be extremely far away from the solar system.

……

It is precisely because of the complexity of the movement of celestial bodies throughout the galaxy,

It is very difficult for human beings to simulate the surrounding environment of the solar system hundreds of millions of years ago.

All the cases that Xiaoguang said about 560 million years ago, Rutan was very close to the solar system,

Yang Meng couldn't judge the truth or falsehood of Xiaoguang's words.

Although he could not judge, the paleontogeology and archaeology of mankind have found many materials for the origin of life for mankind.

"Xiaoyi, what was the condition of the earth 560 million years ago?"

"According to the search, the earliest paleontological animal fossils found by humans so far are paleontological fossils 558 million years ago!"

"The earliest paleontological fossils were also at this time?" As soon as Yang Meng finished saying this, Xiao Yi in his head immediately reminded:

"Note that it is a paleontological animal fossil, not a paleontological fossil, there is a big difference between the two!"

"The difference?"